2 1 1 Aggregates 2 1 2 Pervious Base Course 2 1 2 1 Asphalt Treated Permeable Base 2 1 2 2 Cement Treated Permeable Base PART 3 EXECUTION 3 1 BASE COURSE 3 2 OPENING AND OPERATION OF PITS 3 3 MIXING OF MATERIALS 3 4 PLACING 3 4 1 Stationary Plant Method 3 4 2 Windrow Traveling Plant nbsp
14 Aug 2014 AggreScreed Gravel Grader Road Building Road Construction Gravel Screed Grading Roads Duration 1 42 terratecindustries 1 666 125 views middot 1 42 middot Sieve Analysis of Coarse Aggregate Duration 14 27 NCTEL 64 317 views middot 14 27 Plant Produced Bitumen Basecourse Duration 2 58
301 03 Materials 301 04 Mixing Plants 301 05 Plant Ticket 301 06 Spreading and Finishing 301 07 Thickness Tolerance 301 08 Method of Measurement 301 09 Basis of Payment 301 01 Description This work shall consist of constructing a base course of aggregate and bituminous material mixed in a central plant and nbsp
Bank Gravel Base Course Batch Plant Binder Course Bitumen Blast Furnace Slag Bleeding or Flushing Asphalt Blow Up Break and Seat Breaking C California Travel Plants Truck Factor U Upheaval V Viscosity Viscosity Grading Voids in Mineral Aggregate VMA W Well Graded Aggregate Wet Mixing Period
Work in this section shall conform to S ubsection 401 04 – Bituminous Mixing Plant Requirements and Process 301 02 Materials A General Materials shall conform to the following Asphalt Cement 702 01 Aggregate for Plant Mix Asphalt Concrete Base Course 703 03 Filler 703 15 Blending Sand 703 22 Hydrated Lime nbsp
1 May 2004 301 3 3 1 Traveling Mixing Plant 301 4 301 3 3 2 Dry Mixing 305 GRADED AGGREGATE BASE COURSE 305 1 307 3 2 Stationary Plant Mixing Operations 307 2 307 3 2 1 Soil Cement nbsp
Construction aggregate or simply quot aggregate quot is a broad category of coarse to medium grained particulate material used in construction including sand gravel crushed stone slag recycled concrete and geosynthetic aggregates Aggregates are the most mined materials in the world Aggregates are a component of nbsp
Optimum Moisture Will be limited to plus or minus two percent 2 B Mixing Subbase or aggregate base materials shall be mixed in an approved central mixing plant of the pugmill or other mechanical type unless otherwise specified The materials shall be blended prior to or during mechanical mixing in such a manner nbsp
With its high mixing performance Nikko 39 s soil plant is suitable for production of various kinds of base course material ※Adoption of a twin shaft pugmill mixer used with an asphalt plant ※Easy assembling and dismantling due to the Mixer Type Twin shaft pug mill continuous type Aggregate Hopper Capacity 8 m nbsp
Another type of stabilized base course is cement stabilized soil aggregate The soil aggregate to be stabilized should have the same recommended mixing proportions and gradation requirements as the soil aggregate for raw aggregate base courses However the maximum allowable liquid limit for cement stabilized soil nbsp
when alternately frozen and thawed or wetted and dried shall not be used for aggregate base course materials The glass cullet crushing plant shall be capable of producing a product meeting the gradation requirements of AASHTO require mixing to blend with reclaimed material to ensure adequate compaction 3 4
The source and gradation of the aggregate for each mix D Type of plant to be used for mixing each mix 1 05 QUALITY REQUIREMENTS A Determine the location suitability and quantity of materials available for the supply of the aggregate base course from a single source throughout the work B Examine the substrate nbsp
Mixing and Placing Materials 6 3 1 Unless otherwise provided in Special Provisions mix the base course by the stationary plant method Use the quantity of Portland cement added to the aggregate which is typically between 2 5 and 5 0 by weight of the surface dry aggregate at the rate established by the Geotechnical nbsp
The WORK to be performed includes the preparation of the aggregate base course Aggregate Subbase Base and Surface Courses 3 05 MIXING A Unless otherwise specified CONTRACTOR shall mix the aggregate by any one of the three following methods 1 Stationary Plant Method Aggregate base course and nbsp
more than eight If fine aggregate coarse aggregate or binder in addition to that present in the base material is necessary in order to meet the gradation or density requirements or for satisfactory bonding of the material it shall be uniformly blended with the base course material at the mixing plant by a mechanical feeder to nbsp
aggregates to produce grader or paver laid bound sub base layers using cement The batching and mixing plant shall be purpose built by a manufacturer having granular base with asphalt bound base Sub basecourse surface level 5 mm 10 mm 15 mm 0 mm Sub basecourse layer thickness 0mm 20mm
and or mixing plant The material for such purpose shall be obtained from sources approved by the ENGINEER The addition of filler may be composed of sand but the amount of sand shall not exceed 20 percent by weight of the total combined base aggregate The sand shall pass a No 4 mesh sieve and not more than 5 nbsp
2203 5 Plant Mix Bituminous Drainable Base Course A Summary This item shall consist of an asphalt stabilized drainable base course composed of mineral aggregate and bituminous material mixed in a central mixing plant and placed on a prepared course in accordance with the specifications and shall conform to the nbsp
Cement Treated Base CTB cement stabilized base A bituminous or portland cement concrete wearing course is placed on the CTB to complete the pavement structure Cement treated base is widely used The aggregate granular material cement and water are typically mixed in a central mixing plant Central plants nbsp
aggregate depending upon whether Type A or Type B base is required in the construction Type A Base will require the use of Class A aggregate Grading D Either Class A or Class B aggregate may be used for Type B Base When the stationary plant method for mixing is used the aggregate will be accepted immediately nbsp
material for changing the soil constants of the material passing the No 40 mesh sieve or for correcting the gradation to the limitations of the specified gradation it shall be uniformly blended with the base course material at the crushing plant or at the mixing plant The material for such purpose shall be obtained from nbsp
When central plant mixing is necessary or is elected by the contractor the requirements of Class I Base Course Specification Section 301 will apply except that a subgrade layer may not be required In locations where normal construction practices for soil cement cement treated or aggregate base are seriously impeded nbsp
Construction of Plant Mixed Bound Sub Base Pavement Layers Page 1 of 12 NOTES TO Plant modified aggregate mixing is the process where a purpose built mixing plant is able to handle stockpiled aggregate in aggregate should be carried out during the course of the mixing operation using methods which can